X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdecoder.h;h=908d3aae51c3948803199af980ae4f7bb1e1f157;hb=ea910e250a0fb3b0ad3ce0cf32dd27b24c17cd1d;hp=6cd7757b6562c05a36ee099f8b57b4a4769f5f39;hpb=09a95eca971ddd2ea75cd615e7ef2b997d52b690;p=dcpomatic.git

diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index 6cd7757b6..908d3aae5 100644
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -21,136 +21,45 @@
  *  @brief Parent class for decoders of content.
  */
 
-#ifndef DVDOMATIC_DECODER_H
-#define DVDOMATIC_DECODER_H
+#ifndef DCPOMATIC_DECODER_H
+#define DCPOMATIC_DECODER_H
 
-#include <vector>
-#include <string>
-#include <stdint.h>
 #include <boost/shared_ptr.hpp>
-#include <boost/signals2.hpp>
-#include "util.h"
-#include "stream.h"
+#include <boost/weak_ptr.hpp>
+#include <boost/utility.hpp>
+#include "types.h"
 
-class Job;
-class Options;
-class Image;
-class Log;
-class DelayLine;
-class TimedSubtitle;
-class Subtitle;
 class Film;
-class FilterGraph;
 
 /** @class Decoder.
  *  @brief Parent class for decoders of content.
- *
- *  These classes can be instructed run through their content
- *  (by calling ::go), and they emit signals when video or audio data is ready for something else
- *  to process.
  */
-class Decoder
+class Decoder : public boost::noncopyable
 {
 public:
-	Decoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *, bool, bool);
-	virtual ~Decoder ();
+	Decoder (boost::shared_ptr<const Film>);
+	virtual ~Decoder () {}
 
-	/* Methods to query our input video */
-
-	/** @return video frames per second, or 0 if unknown */
-	virtual float frames_per_second () const = 0;
-	/** @return native size in pixels */
-	virtual Size native_size () const = 0;
-	/** @return number of audio channels */
-	virtual int audio_channels () const = 0;
-	/** @return audio sampling rate in Hz */
-	virtual int audio_sample_rate () const = 0;
-	/** @return format of audio samples */
-	virtual AVSampleFormat audio_sample_format () const = 0;
-	virtual int64_t audio_channel_layout () const = 0;
-	virtual bool has_subtitles () const = 0;
-
-	virtual int time_base_numerator () const = 0;
-	virtual int time_base_denominator () const = 0;
-	virtual int sample_aspect_ratio_numerator () const = 0;
-	virtual int sample_aspect_ratio_denominator () const = 0;
-	
-	void process_begin ();
-	bool pass ();
-	void process_end ();
-	void go ();
-
-	/** @return the index of the last video frame to be processed */
-	int video_frame_index () const {
-		return _video_frame_index;
-	}
-
-	virtual std::vector<AudioStream> audio_streams () const {
-		return std::vector<AudioStream> ();
-	}
-	
-	virtual std::vector<SubtitleStream> subtitle_streams () const {
-		return std::vector<SubtitleStream> ();
-	}
+	/** Perform one decode pass of the content, which may or may not
+	 *  cause the object to emit some data.
+	 */
+	virtual void pass () = 0;
 
-	/** Emitted when a video frame is ready.
-	 *  First parameter is the frame.
-	 *  Second parameter is its index within the content.
-	 *  Third parameter is either 0 or a subtitle that should be on this frame.
+	/** Seek so that the next pass() will yield the next thing
+	 *  (video/sound frame, subtitle etc.) at or after the requested
+	 *  time.  Pass accurate = true to try harder to get close to
+	 *  the request.
 	 */
-	boost::signals2::signal<void (boost::shared_ptr<Image>, int, boost::shared_ptr<Subtitle>)> Video;
+	virtual void seek (Time time, bool accurate) = 0;
 
-	/** Emitted when some audio data is ready */
-	boost::signals2::signal<void (boost::shared_ptr<AudioBuffers>)> Audio;
+	virtual bool done () const = 0;
 
 protected:
-	
-	/** perform a single pass at our content */
-	virtual bool do_pass () = 0;
-	virtual PixelFormat pixel_format () const = 0;
-	
-	void process_video (AVFrame *);
-	void process_audio (uint8_t *, int);
-	void process_subtitle (boost::shared_ptr<TimedSubtitle>);
-	void repeat_last_video ();
 
-	int bytes_per_audio_sample () const;
+	virtual void flush () {};
 	
-	/** our Film */
-	boost::shared_ptr<Film> _film;
-	/** our options */
-	boost::shared_ptr<const Options> _opt;
-	/** associated Job, or 0 */
-	Job* _job;
-
-	/** true to do the bare minimum of work; just run through the content.  Useful for acquiring
-	 *  accurate frame counts as quickly as possible.  This generates no video or audio output.
-	 */
-	bool _minimal;
-
-	/** ignore_length Ignore the content's claimed length when computing progress */
-	bool _ignore_length;
-
-private:
-	void emit_audio (uint8_t* data, int size);
-	
-	/** last video frame to be processed */
-	int _video_frame_index;
-
-	std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
-
-	DelayLine* _delay_line;
-	int _delay_in_bytes;
-
-	/* Number of audio frames that we have pushed to the encoder
-	   (at the DCP sample rate).
-	*/
-	int64_t _audio_frames_processed;
-
-	boost::shared_ptr<TimedSubtitle> _timed_subtitle;
-
-	boost::shared_ptr<Image> _last_image;
-	boost::shared_ptr<Subtitle> _last_subtitle;
+	/** The Film that we are decoding in */
+	boost::weak_ptr<const Film> _film;
 };
 
 #endif